Signaling device



L. S. KEILHOLFfZ.

SIGNALING DEVICE.

APPLICATION FILED JAN- 29, 1917- Ymzmss. Pa en ed u y 4,1922.

- I vi 4- m residing at Da ton, county or Montgomery,

and State of Ohio, have invented certain new and useful improvements in Signaling Devices, of which the following; is e full, clear, and exact description.

This invention relates to improvements in combustion engines, and more particularly to thattype commonly known as ste ionary engines.

One of the objects of the tion is to provide signaling nection With the crank case of the engine, whereby the attention of the attendant may be attracted When the lubricant in said crank case has reached a predetermined low levela Another object of the present invention is to combine an audible signali device with the crank case of a coinontlon engine, in such a manner that when the level of the lubricant contained Within the crank case reaches a predetermined low point, the operation of the engine piston, in displacing the gas 1 air normally contained within the crank case chamber of the engine, Will he forced through the signaling; device and actuete the same to indicate a determined. low level of the lubricant.

Further objects and advantag s will he apparent "from the i cllowing Zion, reference being); had to the accompanying drawing, wherein one pre erred form of emhodiinent of the present invention is clee set forth.

' In the drawing:

* is 2. part sectio present invenmeens in condesignates an intern ")roviden with a 1 l Emmury it? in Fig. 1, is carried at the unity of the pipe or casing 27. re. to Fig. detail Vi8W of this Whistle 28, comprising two sheet metal dice 29 and 30, secured adgecent to one another, on the casing ,17. @ne of these discs is of a convex form, Wi t. the other is concave, which. form a sneal chamber between the tWo.

ismall opening 31 is provided in each of said dice, which openings are directly in ahneinent with each other, and'concentric ith the 27.

Now, suppcsing that the engine is operating and that the level of the lubricant in the crenlr is up to the heavy dotted V downward travel of the piston 23 will tend displace the air Within the crank This displaced air may be permitted to escape out of said crank case, through any suitihle hreather device such as breather 40.

This displacing of the air within the crank case, and the escape thereo-i through the breather will tend to cause the lubricant in said crank case to surge. As long as the le'velor" the lubricant is high enough, the opening 33 to the casing 27 Wlll he held closed. and none of the displaced air of the crank case can find its way into said casing.

Hm soon as the level of the lubricant has reached shout the level designated by the fine line 34-, the surging of the lubricant will permit some of the air or of the crank case, displaced by the operation of the piston, to force my into the casing and thence tl'irough the holes 31 in the discs 30 and 29. The air through said holes 1, nder will cause at noise-or r ing; that the ached its eplenished.

line 32, in l,

9e 2*? may he level desi 1.

A. rv til 9, s)

3/1. a, ,V' 1 ecterndned le /v r forms e, and fopo =1 departing 2, there is shown a i .M: N a 2 u various changes ans aderw iii from the spirit and scope of the invention.

What I claim is as follows:

1. In a device of the character described, the combination with an engine including a crank case having a breather and adapted to contain a supply of lubricant, said crank case being provided with an opening pos tioned below the normal level of the lubricant; a tube connected to said crank case and having a-passage-Way communicating with the opening in the crankcase; andan audible signaling device secured to said tube, whereby the passage of air to the signaling device due to the operation of the engine will indicate a predeter .ined low level of the lubricant in the crank case.

In a device of the character described, the combination with an engine having a cylinder and a piston therein, and a crank case ha ing a breather and adapted to CD11" tain a quantity of lubricant, said crank case being provided with an opening positioned belovv the normal level of the lubricant; of an audible signal associated with said opening, whereby a displacement of gaseous content from the crank case, due to the operation of the piston, will actuate said signal at such times as the lubricant reaches a predetermined low level.

3. In a the combination with an engine'having a cylinder and a piston therein, and a crank case having a breather, adapted to contain a quantity of lubricant; of a signaling device having communication with the crank case below the normal lubricant level and adapted to be actuatec, during the pulsation of the gaseous content. of the crank case due to the device of the character described,

operation of the piston, when the level of the lubricant has reached a predetermined low point.

4-. In combination with 'n engine coinprising a crank case having a breather and adapted to contain a quantity lubricant; ot' a signaling device communicating with the crr 1h c amber below the norrnal level the lubricant and adapted to be actuated during the pulsation of the gaseous content of said crank case due to the operation of the engine, when the lubricant reaches a predetermined low level.

5. The combination with an engine comprising a crank case having a breather and adapted to contain a quantit" of lubricant; of a signaling device conip ring a conduit communicating with the crank -ase chamber below the normal level of the lubricant, and adapted to be actuated during the passage of air through said conduit. due to the operation of the engine, when the lubricant reaches a prcde'ierniinec low level.

(3. In combination with an engine comprising a crank case having); a breather and adapted to contain a quantity of lubricant: a signaling device having communication with the crank case below the normal lubricant level, said communication being open for the pa:- age of air for operating said signaling device when the lubricant reaches a predeterniincd low level.

gnature ncs es. 

